| 西双版纳石灰山季雨林四数木-闭花木-多花白头树群落动态研究 |
| |
| 引用本文： | 杨正斌,余东莉.西双版纳石灰山季雨林四数木-闭花木-多花白头树群落动态研究[J].林业调查规划,2013(5):23-31. |
| |
| 作者姓名： | 杨正斌 余东莉 |
| |
| 作者单位： | 西双版纳国家级自然保护区科研所,云南景洪666100 |
| |
| 摘 要： | 基于1995年和2011年固定样地调查数据探讨西双版纳四数木一闭花木一多花白头树群落种类组成、群落结构及优势种群个体数量方面的变化。分析显示，群落内高等植物种数净减5种（新增4种，消失9种），热带分布型科、属比率分别上升7．3％和2％；A、B、C、D4层原有乔木（DBH≥5em）个体死亡率分别为0％、44．4％、16．3％和60％；A、132层乔木个体比例下降2．5％。乔木种群的频度分布格局和构造种群比例维持不变；群落乔木立木级结构保持正金字塔型，优势种群的立木级分布格局无明显变化。研究表明，该群落发育处于较为成熟阶段；15年来群落乔木的优势成分保持不变，群落总体结构稳定，草本层和层间植物的种类和个体数量减少明显；优势树种中，四数木和多花白头树2个种群趋于衰退，油朴有取代四数木或多花白头树在林冠层优势地位的趋势。
|
| 关 键 词： | 石灰山季雨林 群落动态 物种组成 群落结构 西双版纳 |
Dynamic Changes of Cleistanthus sumatranus, Tetrameles nudiflora, Garuga floribunda Community in Limestone Monsoon Forest of Xishuangbanna |
| |
| YANG Zheng-bin,YU Dong-li.Dynamic Changes of Cleistanthus sumatranus, Tetrameles nudiflora, Garuga floribunda Community in Limestone Monsoon Forest of Xishuangbanna[J].Forest Inventory and Planning,2013(5):23-31. |
| |
| Authors: | YANG Zheng-bin YU Dong-li |
| |
| Institution: | (Research Institute of Xishuangbanna National Nature Reserve, Jinghong, Yunnan 666100, China) |
| |
| Abstract: | The dynamic changes of Cleistanthus sumatranus, Tetrameles nudiflora, Garugafloribunda on the composition, structure, and population of dominant tree species community in limestone monsoon for- est of Xishuangbanna has been carried out. The results based on the investigations of 1995 and 2011 showed that the community had a pure loss of five vesicular plant species （9 species disappeared, 4 spe- cies recruited）. Percentages of the families and genera with tropical affinity have increased respectively by 7.3% and 2%. Mortalities of the tree stems （DBH ~〉5cm） in Layer A, B, C and D was up to 16.7% , 3, 6% , 14.3% and 30.6% respectively. The proportion of the tree stems in layer A and B declined by 2.5 %. Frequency distribution pattern of the tree populations and the proportion of ＂construc- tion populations＂ in the community remain same. Structure of diameter classes of the tree stems in com- munity maintained pyramid-shape and no significant change occurred in the distribution pattern of diame- ter classes for the dominant populations. The study also revealed that the community was in a fairly ma-ture developed stage. Within the 15 years, the prevailing composition of the community kept same; the general structure of the community was stable. Richness of species and number of individuals for the herbs and inter-layer plants has been declined evidently. The population of two dominant species （ Tetra- meles nudiflora, Garugafloribunda） trended to decline which implied that, in the long run, Celtis wightii would probably replace Tetrameles nudiflora and Garuga floribunda in the canopy layer. |
| |
| Keywords: | limestone monsoon forest community dynamics species composition community patern Xishuangbanna |
| 本文献已被 维普 等数据库收录！ |
|
